﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Storage;
using Windows.Storage.Streams;
using Windows.UI;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
using Windows.UI.Xaml.Navigation;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace TopoViewer
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainPage : Page
    {
        MapManager manager = new MapManager();

        public MainPage()
        {
            this.InitializeComponent();
            manager.Initalize();
        }

        private async void Page_Loaded(object sender, RoutedEventArgs e)
        {
            this.Image1.Source = await manager.Render((int) this.Image1.Width, (int) this.Image1.Height);
        }

        private async void Image1_KeyDown(object sender, KeyRoutedEventArgs e)
        {
            if (e.Key == Windows.System.VirtualKey.Add)
            {
                manager.ZoomIn();
                this.Image1.Source = await manager.Render((int)this.Image1.Width, (int)this.Image1.Height);
            }

            if (e.Key == Windows.System.VirtualKey.Subtract)
            {
                manager.ZoomOut();
                this.Image1.Source = await manager.Render((int)this.Image1.Width, (int)this.Image1.Height);
            }
        }
    }
}
